Introduction to Python
Python is an open-source, high level, interpreter based language that can be used for a multitude of scientific and non-scientific computing purposes.
Features of Python
• Python is a high level language. It is a free and open source language.
• It is an interpreted language, as Python programs are executed by an interpreter.
• Python programs are easy to understand as they have a clearly defined syntax and relatively simple structure.
• Python is case-sensitive. For example, NUMBER and number are not same in Python.
• Python is portable and platform independent, means it can run on various operating systems and hardware platforms.
• Python has a rich library of predefined functions.
• Python is also helpful in web development. Many popular web services and applications are built using Python.
• Python uses indentation for blocks and nested blocks.
Execution Modes
There are two ways to use the Python interpreter:
a) Interactive mode
b) Script mode
Interactive mode allows execution of individual statement instantaneously. Whereas, Script mode allows us to write more than one instruction in a file called Python source code file that can be executed.
Python Keywords
Keywords are reserved words. Each keyword has a specific meaning to the Python interpreter, and we can use a keyword in our program only for the purpose for which it has been defined. As Python is case sensitive, keywords must be written exactly.
Here's a
list of all keywords in Python Programming
|
Keywords in Python programming
language |
||||
|
False |
await |
else |
import |
pass |
|
None |
break |
except |
raise |
|
|
True |
class |
finally |
is |
return |
|
and |
continue |
for |
lambda |
try |
|
as |
def |
from |
nonlocal |
while |
|
assert |
del |
global |
not |
with |
|
async |
elif |
if |
or |
yield |
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